Release 1:
   - comm_receive condensed to a single loop
   - cleaned up buffer allocation
   - put SO_REUSEADDR back

Release 2:
   - fixed the call to setsockopt
   - made it compatible with precompilation

Release 3:
   - properly initialized usr->newlines (fixes crashing bug)
   - fixed bug where commands would only be executed if several were queued.
   Because I no longer have a copy of DGD 1.0.a7 to test, this release
has not been as well tested as net-3.dgd-7.5. I have simply translated
the changes I made to the other version.